books.google.com - In the middle of the night they quickly build houses and seize land before the police destroy their fragile homes. They're squatters--families that risk the wrath of governments and property owners by building dwellings on land they don't own--and they represent one out of every ten people on the planet....http://books.google.com/books/about/Shadow_Cities.html?id=bWfGQgAACAAJ&utm_source=gb-gplus-shareShadow Cities